Oscillating motor.



H. L. ZABRISKIE.

GSCILLATING MOTOR.

APPLICATLON FILED JULY 1a. 1916.

1,253,199. Patented Jan. 8,1918.

3 $HEETS-SHEET I.

H. L. ZABRISKEE.

OSCILLATING MOTOR APPLICATION FiLED JULY13,1918.

H. L. ZABRISKIE.

OSClLLATING MOTOR.

APPLlCATlOh FILED JULY Is, 1915.

Patented Jan. 8,1918.

' 3 SHEETS-SHEET 3.

gizzham UNITED STATES PATENT OFFICE.

HENRY LRZABRISKIE, OF WESTFIELD, NEW JERSEY, ASSIGNOR T0 DIEHL MANUFAC-TUBING COMPANY, OF ELIZABETH, NEW JERSEY, A CORPORATION OF NEW JERSEY.

OSCILLATING MOTOR.

Application filed July 13. 1916.

To all whom it may concern Be it known that I, Henry L. ZABRLSKIE, acitizen of the United States, residing at Vestfield, in the county ofUnion and State of New Jersey, have invented new and use-.t'ulImprovements in Oscillating Motors, or which the following is aspecification.

This invention relates to oscillating motors. It relates particularly tooscillating electric fan motors.

Electric motors for driving tans are often provided with a mechanism forcausing them to slowly oscillate or rotate so as to distribute a currentof air therefrom. It important that these mechanisms be simple so thatthey may be inexpensively manufacturedand so that they will not. readilygetv out of order. Itis further important that they be compact so thatthey will occupy little space and present an artistic appearance. Theyshould also operate positively and efiiciently upon a very small powerconsumption in order that the cost of operation shall be a minimum.

One of theobjects of the present invention is to provide an improvedoscillating means for a motor.

-Another objectis to provide a simple compact, efficient oscillatingmeans tor an electric motor which is contained within the motor housing.I

Another object is to provide a compact artistic electric fan having animproved oscillating means.

Other objects and advantages of the invention will hereinafter appear.

The accompanying drawings illustrate an embodiment of the invention.

The views of the drawings are as follows:

Figure 1 is a side elevation of an electric fan equipped with theimproved oscillating means, said view showing the neat, com pact,artistic appearance of the tan.

Fig. 2 is a cross section view.

Fig. 3 is a cross section view on the line 33 of Fig. 2.

Fig. 4 is a perspective view of the gearing by means of which the tan isoscillated.

Fig. 5 is a view on the line 55 of Fig. 2, showing in dotted lines thedifferent positions of the oscillating arm.

The general structure of the electric fan .to which the invention isapplied will first be described. It is shown in Figs. 1 and 2.

Specification of Letters Patent.

Patented Jan. 8, 1918.

Serial No. 109,075.

The fan comprises in general a base 1 an electric motor 2, and a rotaryfanning element 3. The mechanism for oscillating the motor is carried bythe motor housing at the end thereof adjacent the tanning element. Thisoscillating mechanism will be hereinafter described.

The base 1 is in the form of a hollow pedestal which is adapted to reston a table, the bottom of the base being covered by a rubber pad 4:which prevents injury to a finished surface and at the same time forms acover for the hollow interior of the base. A switch mechanism forcontrolling the motor is located within the base, suitable openingsbeing provided for electrical conductors leading to the switch mechanismand from it to the motor. The switch is govorned by a handle 5 whichprojects through a slot in the base.

The base is also arranged to be attached to a wall or other surface forwhich purpose it is provided with suitable openings to receive fasteningdevices. In order that the fan may be properly positioned when the baseis attached to a wall, the pedestal post is divided into an upper andlower section, the upper section 6 being pivoted to the lower section.Each of the sections has a hemi-spherical projection thereon cooperatingwith a complementary slot in the other section as shown in Fig. 2. Aclamping screw 7 passes loosely through one of the projections and isscrew threaded into the other so that by tightening the clamp thesections of the pedestal post may be clamped together and firmly held inposition. To further insure that the sections will not move relative toone another when the clamp is tightened, one of them is provided with aprojecting pin 8 which cooperates with openings in the opposite sectionto lock the parts together. In order to move one section relatively tothe other, the clamp 7 must be loosened so that one section can be movedlaterally away from the other a sufficient distance to disengage the pin8 from the recess in which it is seated, after which the sections can bemoved about each other,

the hemispherical projections and the com-- by means of which they canbe readily adjusted relative to one another and firmly clamped inadjusted position. It is to be understood that he pedestal constructionmay be varied in its'details to meet different requirements.

The fanning element 3 comprises a plurality of blades mounted on a hub,said blades being shaped and arranged so as to form a propeller whichelivers a current of air when rotated. The number, shape andconstruction of the blades may be varied as the conditions require.

The electric motor 2 which is most clearly illustrated. in Fig. 2 isnovided with a cy-' lindrical casing 9 open at one end and substantiallyclosed at the other. This casing supports the motor field poles andcarries a bearing in its closed end forone end of the armature shaft.The armature and commutator are housed within the casing, the end of thearmature shaft which projects from the open end of the casing having thefan blade attached thereto. The open end of' the casing closed by a cappiece 10 which supports the oscillating mechanism hereinafter described.

The motor casing 9 is provided with a pivot pin 11 which is adapted tofit within a complementary recess in the top of the pedestal section 6.The lower end of the pivot pin rests on a ball bearing 12 in the bottomof the recess in the pedestal section 6, this construction reducing thefriction be tween the parts to a minimum and permitting the motor torotate or oscillate freely about the base.

The oscillating mechanism which is housed within the cap piece 1.0 ofthe motor will now be described. This mechanism is shown in liigs. 2, 3,a and 5.

Itcomprises in general a rotatable shaft 13 parallel to the motor pivotand operated from the motor armature shaft 11- by means of a reductiongear, and an arm 15 pivoted to the stationary standard 6 andeccentrically connected to the shaft.

The rotation of the fan motor causes the shaft 13 to be rotated a t areduced speed and by means of the arm 15, one end of which is pivoted tothe stationary standard, and the other end eccentrically connected tothe shaft 13, the motor is caused to slowly oscil-v late through adescribed angle. The various positions that the arm 15 assumes as theshaft 13 rotates are shown in Fig. 5. The operation of this mechanismwill be described in more detail hereinafter.

The oscillating mechanism contains several important features whichcontribute to its novelty and usefulness. The reduction gearing which isillustrated in perspective in Fig. 4 is of novel construction and it ismounted on the motor and associated therewith so as to produce anunusually compact efficient fan of artistic appearance. These featureswill appear from the following description.

The armature shaft 1 1 carries a worm 16 which is contained within thecap piece 10. Carried by the cap piece is a counter-shaft 17 located atan angle to the armature shaft as is illustrated in Fig. 3. This shaftcarries a worm wheel 18 which meshes with the worm 16. The shaft alsocarries a worm 19 which meshes with a worm wheel 20 carried on the upperend of shaft 13. By means of this gearing the shaft 13 is rotated by thearmature shaft lay at a greatly reduced speed.

The worm 16 which is mounted on the most rapidly revo ving shaft is ofsingle thread construction in order to obtain a slow.

speed of revolution of the g ar 18. The worm 19 is of double threadconstruction which permits the teeth being made more nearly parallel tothe axis of shaft 13 than would be possible ,if the single threadconstruction were used. This enables the driving force to be applied tothe shaft 13 in a more nearly tangential direction than would otherwisebe obtained. The end thrust on the shaft 13 is thus reduced and theellieiency of the drive improved. It is to be understood that a triplethread constructimi may also be used, if desired.

The worm 19 drives the gear '20 at an obtuse angle thus permitting theshaft 13 to be located directly under the armature shaft 141- and in theplane of the armature shaft and the motor pivot. The shaft is thuslocated symmetrically with the result that a balanced and efficientoscillating drive is obtained and a neat, compact structure pro duced.

Attached to the lower end of shaft 13 is a crank disk 21 to which theconnecting rod or arm 15 is attached. The arm 15 is eccentricallyconnected with the shaft 13 by this construction. The other end of arm15 is pivoted to the pedestal section 6 in any suitable manner, as forexample, by means of a pivot pin 22 shown in Fig. 2.

The reduction gearing connecting the worm 16 on the armature shaft withthe rotatable shaft 13 is all contained within the cap piece 10. Theinterior of the cap piece is closed by a cover 23 which, in thisembodiment, comprises two metal plates which, completely close therecess and carry suit able packing around the armature shaft so that therecess may be filled with lubricant for keeping the gearing in 'goodcondition. The shaft 13 is also carried by the cap piece 10, the onlyportion of the oscillating mechanism outside of the cap piece being thecrank disk 21 and the arm 15. The crank disk is of small size andcoincides witlrthe outline of the cap piece without destroying thesymmetry of its appearance. The arm 15 is small and located benea h themotor Ell) and close to the motor casing so that it is hardlynoticeable.

. and that other structures may be devised which come within the scope,of the appended claims.

vWhat I claim and desire ters Patent is v v 1. Means for oscillatingamotor which is pivoted to a stationary base, comprising a worm carriedby the rotating element of the motor, a rotatable shaft carried bysaidn'iotor parallel to the axis of the motor pivot, a

to secure by Let:-

worm wheel carried by said shaft. a counter shaft having a worm wheelmeshing with the worm on said rotating element and a worm meshing withthe worm wheel on said rotatable shaft, andmeans whereby said rotatableshaft oscillates the motor.

2. Means for oscillating a motor which is pivoted to a stationary base,comprising worm carried by the" armature shaft. a rotatable shaftCnIllGdlJY the motor directly beneatlithe armature shaft: and parallelwith the axis of the motor pivot. a worm wheel carried by said rotatableshaft. a countcr shaft having a worm wheel meshing with the worm on thearmature shaft and a'worm meshing withithe worm wheel on said rotatableshaft. and means whereby said rotatable shaft oscillates the motor.

3. Meansfor oscillating a motor which is pivoted to a stationary base.comprising a worm carried by the armature shaft. a rota table shaftcarried by the motor parallel with the axis of the motor pivot and inthe plane of the motor pivot and the armature shaft. a worm wheelcarried by said rotatable shaft, a counter shaft having a worm wheelmeshing with the worm on the armature shaft and a worm meshing with theworm wheel on said rotatable shaft. and means whereby said rotatableshaft oscillates the motor.

4. Means for oscillating an electric motor which is pivoted to astationary base com prising a rotatable shaft carried by the motorparallel with the axis of the motor pivot. a shaft located at an obliqueangle to said rotatable shaft *arrying gearing operatively connectingthe rotatable shaft with the motor armature shaft, and an arm pivoted tothe stationary base and eccentrically connected to the rotatable shaft.

5. Means for oscillating an electric motor pivoted to a stationary basecomprising a rotatable shaft carried by the motor directly beneath themotor armature shaft and parallel to the axis oft-he motor pivot, ashaft located at an oblique angle to said rotatable shaft and carryingreduction gearing connecting the armature shaft to the rotatable shaft,and an arm pivoted to the stationary base and eccentrieally connected tothe rotatable shaft.

' 6. Means for oscillating an electric motor pivoted to a stationarystandard. comprising rectly beneath the armature shaft, a connectingshaft carrying a worm gear meshing with a single tooth worm on thearnn'iture shaft. said connecting shaft also car iV plural tooth wormmeshing with a gear on the rotatable shaft and driving said shaft at anobtuse angle, and an arm pivoted to the standard and eccentricallyconnected to the rotatable shaft.

7. Anelectric motor having a housing pivoted to a stationary standardand closed at one end by a cap piece. a rotatable shaft carried by thecap piece, said shaft being parallel to the axis of the motor pivot andbeing connected to the armature shaft by worm gearing housed entirelywithin said cap piece,'and an arm pivoted to said standardand'eccentrically connected to said rotatable'shaft.

8. An electric motor having a housing pivoted to a stationary standard.said housing being closed at one end by a removable cap piece. arotatable shaft carried by the cap piece. said shaft being locateddirectly beneath the motor armature shaft and parallel to the axis ofthe motor pivot and being connected to said armature shaft by reductiongearing which is housed within said cap piece, and an arm pivoted tosaid standard and eccentrically connected to said rotatable shaft.

9. An oscillating electric fan comprising an electric motor pivoted to astationary standard. said motor having a removable cap piece coveringone end of its housing and forming a bearing for the armature shaft, arotatable fan blade mounted on one end of the armature shaft. said cappiece carrying a rotatable shaft which is located directly beneath thearmature shaft and parallel to the axis of the motor pivot, wormreduction gearing housed in said cap piece for connecting the armatureshaft to the rotatable shaft, and an arm pivoted to the standard andeccentrically connected to the rotatable shaft.

10. An oscillating electric fan comprising an electric motor pivoted toa stationary standard the housing for said motor being closed at one endby a removable cap piece which contains a reduction gearing connectingthe armature shaft with a shaft carried by the cap piece, said lattershaft being located parallel to the axis of the motor pivot and in theplane of the axis of the armature shaft, and an arm pivoted to thestandard and eccentrically connected to the shaft carried by the cappiece.

11. An oscillating electric fan comprising an electric motor pivoted toa stationary standard, the housing for said motor being closed at oneend by a removable cap piece which forms a bearing for one end of themotor armature shaft and contains a reduction gearing connecting thearmature shaft with a shaft carried by the cap piece, said latter shaftbeing located parallel to the axis of the motor pivot and in the planeof the axis of the armature shaft, and an arm pivoted to the standardand eccentrically connected to the shaft carried by the cap piece.

12. An oscillating electric fan comprising an electric motor pivoted toa stationary standard, the housing for said motor being closed at oneend by a removable cap piece which carries a bearing for one end of themotor a rmatnre shaft, a worm carried by the armature shaft andcontained within the cap piece, a counter shaft carried by the cap pieceand located at an angle to the armature shaft, said counter shaftcarrying a worm gear meshing with the worm on the armature shaft andalso carrying a worm which meshes with a worm wheel carried by anothershaft mounted in the cap piece, said latter shaft being parallel to themotor pivot and in the plane of the axis of the armature shaft, a crankhead carried by said latter shaft, and an arm pivoted to the stationarystandard and connected to the crank head.

13. An electric motor having a housing pivoted to a stationary standard,said hous ing being closed at one end by a removable cap piece, the saidcap piece forming a housing and support for a reduction gearingconnecting the armature shaft with a rotatable shaft carried by the cappiece, and an arm pivoted to the standard and eccentrically connected tothe rotatable shaft.

14. An oscillating electric fan comprising an electric motor, astationary standard to which said motor is pivoted the housing for saidmotor being closed at one end by a cap piece, a rotatable shaft housedwithin said cap piece and positioned parallel to the axis of the motorpivot, a Worm Wheel carried by said shaft, a worm carried by thearmature shaft at a point within said cap piece, and an intermediateshaft housed within said cap piece and having a worm meshing with theworm wheel on said first named shaft and a worm wheel meshing with theworm on said armature shaft, and means whereby said first named shaftoscillates the motor.

15. Means for actuating an electric motor which is pivoted to astationary base comprising a rotatable shaft carried by the motorparallel with the axis of the motor pivot, a shaft located at an obliqueangle to said rotatable shaft carrying gearing operativcly connectingthe rotatable shaft with the motor armature shaft, and means wherebysaid rotatable shaft actuates the motor.

16. An electric motor having a housing pivoted to a stationary standardand closed at one end by a cap piece, a rotatable shaft carried by thecap, piece, said shaft being parallel to the axis ofthe motor pivot andbeing connected to the armature shaft by worm gearing housed entirelywithin said cap piece, and means whereby said rotatable shaft actuatesthe motor.

In witness whereof, I have hereunto subscribed my name in the presenceof two witnesses.

HENRY L. ZABRISKIE. Witnesses C. H. MoRnELL, FREDERICK DIEI-IL,

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

